Synonyms for bump

noun

1. A jarring collision

   knock, bang, bounce, jounce, jar, box, smash, pat, crack, jolt, crash, sideswipe, collision, blow, punch, hit, clap, push, shove, thrust, boost, shock, clash, impact, stroke, rap, tap, slap, smack, cuff, whack, thwack, clout, jab, jerk, crash, prod, jolt, slam, nudge, buffet, thud, swat*, bash*, wallop*, belt*, bat*, swipe*, thump*, poke*, clump*, plump*, clunk*, sock*, whop*, slug*; see also blow 1, collision 1.

2. A swelling or bulge

   lump, projection, protuberance, knob; see bulge, swelling.

verb

1. To collide with

   collide, knock against, run into, strike; see crash 4, hit 1, 2.

2. To make a bumping sound

   thud, whack, pound, smack, thwack, rap, slap, punch, slam, plop, plunk, thump, clump, bang, knock, clatter, clap, crash, rattle, thunder, tramp.

3. To move with jerks or jolts

   bounce, jolt, jounce; see jar 1.